bset_file_format 1058 src/buffer.c     bset_file_format (b, Qnil);
bset_file_format 4642 src/buffer.c     bset_file_format (&buffer_local_flags, make_fixnum (-1));
bset_file_format 4768 src/buffer.c     bset_file_format (&buffer_defaults, Qnil);